Crap... ummm ummm.....those are ummm monitors yes..monitors to make sure everything is fresh, nothing more, they are meant for your safely....just a gift for your friendly Cardassian friends the Tru....Cardassian Union
They are the holoemitters for ESD. To protect the various people that are stationed on ESD, they are not actually there. Some of them are actually just holograms like the Vendors. Admiral Quinn and Ambassador Sugihara are actually at very secure locations and utilize telepresence to conduct their business on ESD. In fact, ESD is just a huge hologram. ESD is just the prototype for all future ships and stations of the Federation. All they need to create a facility is an energy source and an extremely advanced holoemitter. This secret was supposed to be revealed a couple of years from now when all the glitches were removed. Some of the glitches involved people getting outside the ESD. Thankfully, the forcefield containing the air extends 100 meters past ESD's walls.